USB to RS485 Converter Adapter CH340 2-Wire Serial Interface

🔁 USB to RS485 Converter Adapter CH340 2-Wire Serial Interface | AuscomTech

The USB to RS485 Converter Adapter is a compact, industrial-grade serial interface designed for stable and long-distance RS485 communication between a computer and RS485-enabled devices.

Powered by the reliable CH340 chipset, this adapter delivers strong anti-interference performance, plug-and-play USB operation, and broad OS compatibility. It is ideal for PLC systems, MODBUS networks, PTZ cameras, Arduino projects, and industrial data acquisition where dependable serial communication is essential.

⭐ Key Features

🧠 CH340 USB-to-Serial Chipset
Provides stable, high-reliability RS485 communication with wide driver support.

🔄 RS485 Half-Duplex (2-Wire)
Supports differential RS485 signalling for long-distance, noise-resistant data transfer.

🔌 True Plug & Play Operation
USB-powered design requires no external power supply.

📡 Long-Distance Communication
Supports transmission distances up to 1200 m (1.2 km) under suitable conditions.

💡 LED Status Indicators
Onboard LEDs display Power, TX, and RX activity for easy diagnostics.

⚡ Wide Baud Rate Support
Supports standard baud rates from 75 bps to 115,200 bps (higher rates supported by chipset).

🧱 Compact & Durable Housing
ABS enclosure designed for industrial, field, and workshop use.

📊 Technical Specifications

Model: USB to RS485 Converter Adapter
Chipset: CH340
USB Interface: USB Type-A
RS485 Interface: 2-wire, half-duplex (A / B)
Operating Voltage: 5V (USB powered)
Baud Rate Range: 75 bps – 115,200 bps (chipset supports higher rates)
Transmission Distance: Up to 1200 m
LED Indicators: Power / TX / RX
Operating Temperature: −40°C to +85°C
Material: ABS plastic
Dimensions: 61 × 16 × 13 mm
Colour: Black
Driver: CH341SER (required on some operating systems)

⚠️ Important Notes

• RS485 polarity (A/B) must be wired correctly
• Non-isolated design — isolation recommended for high-noise or high-voltage environments
• CH340 driver may need to be installed depending on operating system
• Not compatible with RS232 devices

🧩 Compatible With

• PLC systems
• MODBUS RTU devices
• Arduino (via UART)
• ESP32 / ESP8266
• STM32 microcontrollers
• PTZ cameras
• RS485 sensors, meters, and controllers

⚙️ Typical Applications

• PLC data communication
• MODBUS RTU networks
• Industrial automation systems
• Long-distance serial communication
• Sensor monitoring and logging
• Embedded system debugging

📦 Package Includes

• 1 × USB to RS485 Converter Adapter (CH340 Chipset)